Heat-retaining means for waxed-thread sewing-machines.



F. GUSTAVESON. HEAT RETAINING MEANS FOR WAXED THREAD SEWING MACHINES.

APPLICATION FILIBD JULY 2, 1912. I 1 070 338 Patented Aug. 12, 1913.

2 SHEE18-SHEET 1.

F. GUSTAVESON.

HEAT RETAINING MEANS FOR WAXED THREAD SEWING MACHINES. APPLICATION FILED JULY 2, 1912.

1 ()70 338 Patented Aug-12, 1913.

2 SHEETS-SHEET 2.

awe/Mom Fran/r Haslamsmz wm b v I *iinrrsn sra'rss PATENT OhFiCE.

FEAIG K GUSTAVESON, OE WAB ASHA, MINNESOTA.

"HEAT-RETAINING MEANS FOR WAXETD-THREAD SEWING-MACHINES.

To all whom it may concern lie it known that I, FRANK Gosravnsox, a citizen of the Unit-ed States, residing at lVabasha, in the count of \Vabasha and State of Minnesota, have invented new and useful Improvements in Heat Retaining Means for -Waxed-Thread Sewing-Machines, of which the following is a specification.

The invention relates to sewing machines utilizing a waxed thread and has for its object to maintain the waxed thread at such a temperature as to prevent its breaking when forming the stitch as frequently happens when the thread becomes cooled to such an extent as to prevent its free passage tprough the eye of the needle and the shutt e. i

The invention contemplates a housing for inclosi-ng the working parts of the sewing machine and for directing the heat upon the thread in such a manner as to-keep the wax soft during the sewing operation, there by preventing snapping or breaking of the thread.

A further purpose of the'invention is the provision of a housing which may be sepa rate from and applied to the machine or which may form a part thereof, said hous ing being of such construction as to .admit' of access being readily had to theworking parts of the machine for adjustment, oiling cleaning or other purpose;

Theinvention consists of the novel features, details of construction and combination of parts, which hereinafter will be more particularly set forth, illustrated in the accompanying drawings, and pointed out in the appended claims.

Referring to the drawings, forming a part of the specification, Figure 1 is a perspective View .of a sewing machine using a waxed threadprovided with heat retaining means embodying the invention, the parts being shown in closed position. Fig. 2 is a view similar to Fig. 1, the parts of the housing being open to expose the working parts of the sewing machine so that access may be readily had thereto.

Corresponding and like parts are referred to in the following description, and indicated in all the views of the drawings, by the same reference characters.

The sewing machine illustrated is of the type designed chiefly for sewing leather or other goods requiring awaxed thread and Specification of Letters Patent. Application filed July 2, 1912. Serial No. 707,294.

ing during the stitching operation,

machine.

Patented Aug. 12,191 3.

which embodies a wax pot or other receptacle maintained at a proper temperature to keep the wax in a soft condition so as to be readily taken up by the thread which is caused to pass therethrough.

The present invention relates to the means for confining the heat and directing the same upon the thread to prevent its breaksaid means being in the nature of a. housing inclosing the working parts with the exception of a space for the introduction and manipulation of the work during the operation of the machine in stitching.

- The invention contemplates a housing which varies according to the style or make of machine to which the invention is adapted, said housing forming a part of such machine or being separate therefrom and secured thereto in any practical way.

The housing comprises essentially two p-arts-wl iichare applied to respectively the upper and the lower portions of the sewing The upper part of the housing is in the nature of a hood 1 which has an opening in its top adapted to be closed by means of a door 2 which is preferably hinged at its inner or rear edge to the housing so that its front portion may be thrown upwardly and rearwardly so as to be out of the way when access is required to be had to the upper part of the sewing machine mechanism. The front port-ion of the hood 1 is contracted and slopes upwardly at its outer end, thereby providing ample space for the introduction and manipulation of the work.

The lower part of the housing is closed at its front by means of a middle and side swinging doorsQ the middle door opening downwardly and the side doors opening outwardly. \Vhen the'three doors are closed the lower portion of the sewing machine mechanism is completely inclosed, thereby confining the heat from the burner or other type of heater employed for keeping the wax soft in the wax pot or receptacle. The middle door 3 has side flanges 4 which extend along side flanges 4: of the middle door so as to conv fine the'heat. Either one of the doors may open independently without disturbing the others so that access maybe had to a particular part of the sewing machine for any purpose that may be required. When the several doors are closed the mechanism of the sewing machine is housed with the exception of that directly opposite the stitching mechanism and designed to receive the work, hence the,heat from the burners is confined and when escaping finds an outlet through the space intended to receive the work, thereby keepingthe wax upon the thread suficiently soft during the stitching operation to prevent snapping or breaking. I

From the foregoing description, taken in Connection with the' accompanying drawings, the advantagesof the construction and of the method of operation willbe readily a parent to those skilled in the art to which tiiia invention appertains, and while I have described the principle of operation of the invention, together with the device which I now consider to be the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative, and that such changes may be made when desired as are within the scope of the claims appended hereto. Having thus described the invention what is claimed as new, is

1. In a sewing machine of thetype uti'lizing a waxed thread, a h'ousing for continin the heat and directing the'same upon the thread,said housing embodying upper and lower portions, the upper portion consist ing of a hood and the lower portionQbe-ing closed by three front doorsQthe middle door being hinged to swing downwardly and the side doors to swing outwardiy, the several doors fitting closely at their meeting edges and each adapted to open independently of the other.

2. In a sewing machine of the variety employing a waxed thread, a housing for confining the heat and directing the same upon the thread", said housingg' being closed by three front doors, the middle door being hinged to swing doors being hinged to swing outwardly and having flanges at their lower and vertical edges, the flanges at the vertical edges of the side doors closing against the flanges at the edges of the middle door, the parts being opening in its top which, is adapted to beciosed by an upwardly swinging door, said housing further embodying a lower portion (which is spaced at its frontQfrom the hood to admit of access being readily had to the stitching mechanism, and which is closed by three doors,)the mi die door being hinged to swing downwardly and having flanges at its vertical edgesand the side doors being mounted Ito swing; outwardly and having flanges at their lower and "verticaliedge the vertical fian' es of the side doors closing against the nges of the middle door, the parts being arranged to admit of any one of the doors being opened. independently of the others.

In testimony whereof'l aflix my signs ture in presence of two witnesses.

FRANK GUSTAVESON Witnesses:

JOHN W. MURDOCH, FANNIE E. CRA'rrn.

'fiopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

ownwardly and having 'flanges at its vertical edges and the side 

